Arm chair



FIG. 1 is a perspective view of my arm chair;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view of my arm chair.

The broken lines are for environmental purposes only and form no part ofthe claimed design.

I claim the ornamental design for an arm chair, as shown and described.